REACTIONS BETWEEN STEEL SURFACES AND ZIRCONIUM IN LIQUID BISMUTH

Journal Article · Mon Aug 01 04:00:00 EDT 1960 · Nuclear Sci. and Eng.

OSTI ID:4149989

Weeks, J R; Klamut, C J

The variables affecting corrosion and mass transfer of steels by inhibited liquid Bi are discussed and explained in terms of the variables affecting formation of the ZrN or ZrC inhibiting films. Corrosion is acclerated by increasing the maximum temperature of operation, the temperature differential, and the Cr content of the steel. Low carbon areas also are more sensitive to attack, as are rough surfaces. Segregation in weld areas and their normally low C content may be responsible for preferential weld attack. Formation of the inhibiting nitride and/or carbide films is controlled by the activity and distribution of N and C in the steel. Minor constituents that influence their activity and distribution may also therefore affect the corrosion resistance. Localized attack is accompanied by Zr deposition, possibly resulting from interaction between the dissolved Zr and carbide particles in the steel. ZrN films may spall, and can reform in the spalled and corroded areas. (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-14-023253
• OSTI ID: 4149989
• Journal Information: Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 8
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BISMUTH
CARBON
CHROMIUM
CORROSION
DIFFUSION
DISTRIBUTION
FILMS
INTERACTIONS
LIQUID METALS
MASS TRANSFER
METALS, CERAMICS, AND OTHER MATERIALS
NITROGEN
QUANTITY RATIO
STEELS
SURFACES
TEMPERATURE
WELDS
ZIRCONIUM CARBIDES
ZIRCONIUM NITRIDES